Improvement in alarm-whistles for speaking-tubes



G. HODGETTS & W. OSTRANDER. Alarm-Whistle for Speaking-Tubes.

No. 213,655. Patented Mar. 25,1879.

Mi 52W UNITED STATES PATENT OFFICE.

GEORGE HODGETTS AND WILLIAM OSTRANDER, OF BROOKLYN, NEW YORK, ASSIGNORS TO SAID HODGETTS.

IMPROVEMENT IN ALARM-WHISTLES FOR SPEAKlNG-TUBES.

Specification forming part of Letters Patent No. 213,655, dated March 25, 1879; application filed February 7, 1879.

To all whom it may concern:

Be it known that we, GEORGE HODGETTS and WILLIAM OSTRANDER, both of Brooklyn, in the county of Kings and State of New York, haveinvented certain Improvements in AlarmlVhistles for SpeakingTubes, of which the following is a specification:

Our improvements relate to the construc tion of the case containing the whistle.

In the drawings, Figure 1 is a longitudinal mid-section; Fig. 2 is a plan; and Fig. 3 is a \lGW similar to Fig. 1, showing the halves of the ease separated and the back half secured to the spcakingtube in the wall.

Let A represent the mouth-piece; B, the whistle; O D, eup shaped shells, being halves of the whistle-chamber, and E the stem or tube for connection with the terminus of the speakin g-tube. This stem E is fixed in the wall, as shown in Fig. 3, and the shell D of the whistleehamber, which is of cup or saucer shape, is fixed to or forms a part of it. The shell 0 of the whistle-chamber is similar in shape to D, and is, preferably, formed in one piece with the mouth-piece A.

The shells O and D fit together at their edges, forming, when connected, a globular or bulb-shaped whistle-chamber, as shown in Figs. 1 and 2. A chamber of this shape is stronger and more sightly, conforms better to the outline of the whistle B when the latter is turned back, and takes less material to construct it, being, consequently, lighter than when made of the usual cylindrical or polygonal form. The shells O and D may be secured together in any suitable manner, that shown consisting of ears to a, projecting from one shell into the other, which receive screws driven through the shell from the outside. The part O A contains the whistle B, the stem 1) of which has hearings in holes formed in the shell O, and is provided with a spring or weight to keep it normally closed, arranged in any usual manner.

Ordinarily, the several parts of the device are used together, as shown in Fig. 1; but

should any of the parts A B 0 become broken or get out of order, these parts may be removed bodily from the parts D E, as shown in Fig. 3 and while they are absent and being rcpaired or replaced the shell D forms a suitable mouth-pieee, so that the use of the speakin g-tube is not interru 'ited.

F is the tell-tale or indicator, which, if used, may be of the ordinary construction.

The shells O D maybemade of any suitable or desirable material. We have shown them as made of cast metal, the sheet-metal tube E being cast into the shell I), and the ears a a into the shell 0; but in lieu of this construction they may be spun out of sheet metal or turned out of wood or other material; or, the part D E may be made of metal, and the part A O of porcelain, if desired, or the mouthpiece A may alone be made of porcelain and be fixed to the shell 0 in any suitable manner.

e claim as our invention 1. A whistle-case for a speaking-tube, formed in two parts, the back part adapted to be fixed in the wall and to form a temporary mouthpiece when the front part is removed, and the front part, in which the whistle is hung, forming the ordinary mouth-piece, substantially as and for the purposes set forth.

2. A globular or bulb-shaped whistle-chamber for a speaking-tube, formed in two parts, suitably connected together, substantially as set forth.

3. A whistle-case for a speaking-tube, made in two parts, one part comprising the neck E and the saucer-shaped shell D, and the other part comprising the shell O and mouthpiece A and bearing the whistle 13, substantially as set forth.

In witness whereof we have hereunto signed our names in the presence of two subscribing witnesses.

GEORGE HODGETTS. XVILLIAM OSTRANDEIL. 'Witnesses:

Gno. L. Fox, JOHN LOUGHRAN. 

